Nozzle for piles and caissons.



FFICE.

EDWARD BIG-NELL, OF LINCOLN, NEBRASKA, ASSIGNOR OF TWO-FIFTHS TO HARRY 'l'. JONES, F SEWARD, NEBRASKA.

NOZZLE FOR PILES AND CAISSONS.

i .ceases Specification of Letters Patent.

Patented Mar. 10, 191.4.

Application led May 31, 1913. Serial No. 770.936.

To @7l 107mm it 721,117/ once/1n.

Be it l nown that l, EDWARD Biennial, a citizen of the United States, residing at Liucoln. in the county of Lancaster and State of Nebraska, have invented certain new and useful Improvements in `Nozzles for Piles and Caissons, and have described the same in the following specification, illustrated by the accompanying,t drawings.

My invention relates in general to that class of subsurface structures, such as piles, sheet piling and caissons, commonly formed of concrete or other cohesive and adhesive material, which are sunk by gravity and by the action of water under pressure, in excavations made by themselves while sinking, and are utilized as foundations for wharvcs, piers, bridges and other superstructures to he supported thereby.

lt relates in .particular to the lower or terminal nozzles of such subsurface structures. Nozzles of this class, as heretofore constructed, usually fail to produce at the foot of the sinkingv substructure an excavation suficiently lare'e in horizontal sectional area to receive that substructure, and also to permit the upward iow of vater and commingled earth around and at the sides of the struc* ture sunk therein.

To obviate this common fault is the object of this invention. To accomplish this object,

' I incorporate in a substructure of this class,

or affix thereto, a terminal nozzle which divides the excavating,Y current, desceinling` through the middle of the structure, into two separate streams, one driven vertically into the earth below, and the other driven obliquely upward and outward along' the under surface of the structure.

ln the accrmipanying drawings, illustrating the best manner in which I have contemplated applying` the principles of the invention, Figure 1 is a sectional elevationof a pile which is constructed in accordance with these principles. Fig. 2 is a central vertical section of av portion of a. caisson, constructed in accordance with the same principles. Fig. 3 is a central vertical section of a portion of a pile or caisson, having aj nozzle constructed in a modified form in accordance with these principles.

The illustrative pile shown in Fig'. 1 is of the general construction and mode of operation disclosed in Letters Patent of the ,cal section as shown.

United States, No. 1,024,820, which were issued to me April 30, 1912, for improvements in piling construction. The body, or stem 1., of this pile, is formed of concrete, or other cement. and is of uniform horizontal section, either circular, square or polygonal. It has a longitudinal axial opening 2, which is lined with a metallic pipe 3, tobe supplied with vater under pressure. It has also a plurality of branch openings Lit, which extend horizontally outward in radial directions from the opening 2 and through the sides of the stem 1. and are lined with the metallic pipes 5, branching from the pipe 3. As in said Letters Patent, this pile has also a rotatable tubular shaft 6, disposed vertically in the pipe 3. and forming a water conduit in coinmunication with the terminal nozzle member 'l'. and the lower nozzle member 8, which are united by the screw bolts 9 and are spaced by the sleeves on those bolts. The nozzle member 7 is an annular plate convex below and havinga central annular boss 9', which engages the end of the pipe 3 by a screw thread and is coaxially and detachably united with the lower end of the stem 1 by any convenient means. The nozzle member S is a concave-convex plate thicker at the middle than at the edges and having a central oriiice 10', smaller than the pipe 6, and cti-axially registering therewith for the diS- charge of an excavating stream vertically downward. rlhis nozzle member S is somewhat larger in diameter than the plate 7, and smaller than the stom 1. The'distance between these plates is greatest in the middle and diminishes toward their edges; whereby the concave convex water space between them, being` the Haring; upper outlet 11 of the nozzle, is vertically contracted toward its circumference, and rendered tapering in verti- 'lhe least cross-'sectional area of the iower outlet 10', plus the corresponding area of the upper outlet 11 of this nozzle, is equal to, or slightly less than the cross-sectional area of the water pipe 6.

The illustrative caisson, shown in Fig. 2, comprises the cylindrical shell 12, having the side nozzles 13, the annular and outrardly convex bottoni shell peripherally united with the shell 12,the central vertical water pipe 3 joined to the bottom shell, and the annular chamber 15 which is formed between the shells and the water pipe. The

I sicall streamv of water from between the nozzle f of the structure in the i'orm of a hollow cyl- -lmemben This construction prevents the adhesion of soil to the bottom of the caisson. `l,

The nozzle shown in Fig. 3, differs from that shown in Fig. 2, in having its lower l nozzle member 16 diametrically larger than i the bottom 14 of the pile or caisson, and in I. being bent upward at its periphery; where-j by its' discharge is directed upward around l, the sides of that substructure.

In the operation of this invention, the

l members is driven upward along the sides i inder of water, aiding the descent of the structure by lubricating its entire peripheral surface, and also by exerting-a reverse downward thrust upon the lower nozzle member. z

l claim as my invention. 1. In a substructure of the specified class, a 'terminal nozzle comprising an annular 'plate detacliably united withthe bottom of the substructure, and an annular downwardly convex plate fastened to the first mentioned plate in a co-axial position and spacedtherefrom.

Q. In asubstructure of the specified class,

a terminal nozzle comprising an annular plate united with the bottom of the substructure, and an annular downwardly convex plate fastened to the first mentioned plate in a coaxial position and spaced apart therefrom.

3. In a substructure of the speciiied class, a terminal nozzle comprising a downwardly convex. annular plate united with the bot toni ofthe substructure, and an annular concavo-convex plate fastened to the first inentioned plate in a coaxial and subjacent position, and spaced apart therefrom.

l'n testimony whereof 1 hereunto subscribe my name in the presence of two witnesses.

Witnesses MiLLAnn EDDY, Hanny T, Jonas.

EDV/'ARD BIGNELL: 

